import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
protected List<IntTaggedWord> treeToEvents(Tree tree, boolean keepTagsAsLabels) {
    if (!keepTagsAsLabels) { return treeToEvents(tree); }
    List<LabeledWord> labeledWords = tree.labeledYield();
//     for (LabeledWord tw : labeledWords) {
//       System.err.println(tw);
//     }
    return listOfLabeledWordsToEvents(labeledWords);
  }
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
protected List<IntTaggedWord> listOfLabeledWordsToEvents(List<LabeledWord> taggedWords) {
  List<IntTaggedWord> itwList = new ArrayList<IntTaggedWord>();
  for (LabeledWord tw : taggedWords) {
   IntTaggedWord iTW = new IntTaggedWord(wordNumberer().number(tw.word()),
                                          tagNumberer().number(tw.tag()));
    itwList.add(iTW);
  }
  return itwList;
}
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
protected List<IntTaggedWord> treeToEvents(Tree tree, boolean keepTagsAsLabels) {
    if (!keepTagsAsLabels) { return treeToEvents(tree); }
    List<LabeledWord> labeledWords = tree.labeledYield();
//  for (LabeledWord tw : labeledWords) {
//  System.err.println(tw);
//  }
    return listOfLabeledWordsToEvents(labeledWords);
  }
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
protected List<IntTaggedWord> listOfLabeledWordsToEvents(List<LabeledWord> taggedWords) {
  List<IntTaggedWord> itwList = new ArrayList<IntTaggedWord>();
  for (LabeledWord tw : taggedWords) {
    IntTaggedWord iTW = new IntTaggedWord(wordNumberer().number(tw.word()),
        tagNumberer().number(tw.tag()));
    itwList.add(iTW);
  }
  return itwList;
}
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
public List<LabeledWord> labeledYield(List<LabeledWord> ty) {
  Tree[] kids = children();
  // this inlines the content of isPreTerminal()
  if (kids.length == 1 && kids[0].isLeaf()) {
    ty.add(new LabeledWord(kids[0].label(), label()));
  } else {
    for (Tree kid : kids) {
      kid.labeledYield(ty);
    }
  }
  return ty;
}
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
protected List<IntTaggedWord> treeToEvents(Tree tree, boolean keepTagsAsLabels) {
  if (!keepTagsAsLabels) { return treeToEvents(tree); }
  List<LabeledWord> labeledWords = tree.labeledYield();
  return listOfLabeledWordsToEvents(labeledWords);
}
 

import edu.stanford.nlp.ling.LabeledWord; //导入依赖的package包/类
/**
 * A <code>EmptyTreeLeaf</code> is invisible in the tagged yield
 */
@Override
public List<LabeledWord> labeledYield(List<LabeledWord> y) {
  return y;
}